CN-122008136-A - Heavy water reactor nuclear power plant auxiliary facilities sleeve pipe dismouting device

CN122008136ACN 122008136 ACN122008136 ACN 122008136ACN-122008136-A

Abstract

The invention belongs to the technical field of auxiliary facilities of heavy water reactor nuclear power plants, and particularly relates to a sleeve dismounting device for auxiliary facilities of a heavy water reactor nuclear power plant. Two flip ear seats are arranged on one side of the upper part of the main frame, and flip is arranged on each flip ear seat; the linear sliding tables are arranged on short square steel transversely arranged in the middle of the main frame in parallel, two sliding table sliding blocks are arranged on each linear sliding table, the sliding table sliding blocks are connected with the bottom of the lifting base plate to enable the lifting base plate to slide on the linear sliding tables, the transverse moving bearing seat cushion blocks are welded on the long square steel in the middle of the main frame, the transverse moving bearing seat cushion blocks are fixed on the transverse moving bearing seat cushion blocks, the transverse moving scale is welded on the upper surface of the transverse moving bearing seat, one end of the transverse moving screw rod penetrates through a bearing in the transverse moving bearing seat to be connected with the transverse moving hand wheel, the other end of the transverse moving screw rod penetrates through a transverse moving mounting hole of the lifting base plate to be connected with the transverse moving nut in a matched mode, the transverse moving nut is fixedly arranged on the lifting base plate, and the transverse moving nut moves back and forth along with the lifting base plate when the transverse moving hand wheel rotates. The invention improves the sleeve disassembly and assembly efficiency and ensures the safety of personnel and equipment.

Inventors

ZHOU WEI
TANG DONGJIE
Wei jiaxing
FENG YI
REN JIANJUN
GUO SHAOJIE
Gu Zhechao
WEI HAOCHEN
ZHANG LONG
SHI WEIZHEN
HE LEI
XIE ZHIXIONG
ZHENG JINCHAO
BI WENQUN
ZHANG GAOWEI
HUANG YAN

Assignees

中核核电运行管理有限公司

Dates

Publication Date: 20260512
Application Date: 20260416

Claims (8)

1. The dismounting device for the auxiliary facility sleeve of the heavy water reactor nuclear power plant is characterized in that two flip ear seats are arranged on one side of the upper part of a main frame, and flip covers are arranged on the flip ear seats; the linear sliding tables are arranged on short square steel which is transversely arranged in the middle of the main frame in parallel, two sliding table sliding blocks are arranged on each linear sliding table, the sliding table sliding blocks are connected with the bottom of the lifting base plate, the lifting base plate slides on the linear sliding tables, a transverse moving bearing seat cushion block is welded on the long square steel in the middle of the main frame, a transverse moving bearing seat is fixed on the transverse moving bearing seat cushion block, a transverse moving scale is welded on the upper surface of the transverse moving bearing seat, one end of the transverse moving lead screw passes through a bearing in the transverse moving bearing seat and is connected with a transverse moving hand wheel, the other end of the transverse moving lead screw passes through a transverse moving mounting hole of the lifting base plate and is matched and connected with a transverse moving nut, the transverse moving nut is fixedly arranged on the lifting base plate, when the transverse moving hand wheel is rotated, the transverse moving hand wheel moves forwards and backwards along with the lifting base plate, the two worm mechanisms are respectively arranged at two ends of the middle of the lifting base plate, the two worm mechanisms are connected through shaft couplings, the lifting hand wheel is arranged near the input end of the worm mechanism on the right side of the lifting base plate, the lifting base plate near the lifting base plate is welded with the lifting hand wheel, the lifting hand wheel is matched and is fixedly connected with the lifting nut through the mounting hole of the upper and the lower guide rail of the lower guide rail, when the lifting base plate is rotated, and each linear sliding plate is matched with the four sliding guide rail is matched and provided with the four guide rails, the two adjacent guide rail sliding blocks in a group are fixedly connected to the lining blocks through bolts so that the two guide rail sliding blocks synchronously move, the lining blocks are fixedly connected with the lower lining blocks of the sleeve, two pressing and overturning buckle plates are respectively connected to two sides of the lower lining blocks of the two sleeves on the right side in a clearance mode, an arc-shaped opening is formed in the upper part of each pressing and overturning buckle plate and matched with a butterfly bolt, when the upper lining blocks of the sleeve are stacked on the lower lining blocks of the sleeve, the pressing and overturning buckle plates are rotated to lean on the butterfly bolts, the butterfly bolts are screwed to enable the upper lining blocks and the lower lining blocks to be connected into a whole to lock the sleeve, the turnover cover is composed of four small square steel pieces, a hollowed-out stainless steel plate and two shaft lugs, the two shaft lugs are in clearance fit with the two turnover cover lug seats of the main frame so that the turnover cover is in 270-degree turnover movement, and two pressing and overturning buckle plates can rotate 360-degree through the pressing and overturning buckle plates respectively connected to two sides of the lower lining blocks of the two sleeves on the right side through the pressing and overturning buckle plates through bolt bolts.
2. The heavy water reactor nuclear power plant auxiliary facility sleeve disassembly and assembly device according to claim 1, wherein the main frame is formed by welding 6 long square steels which are transversely arranged in parallel, 4 long square steels which are longitudinally arranged, 8 short square steels which are transversely arranged in parallel and 4 short square steels which are longitudinally arranged.
3. The heavy water reactor nuclear power plant auxiliary facility sleeve disassembling and assembling device is characterized in that steel plates are welded at the bottom, the middle and the back of a main frame to serve as independent spaces, three storage drawers with the same height are arranged at the upper part, five storage cabinets are arranged at the lower part, the spaces in the cabinets are mutually communicated, the front three cabinet doors and the left cabinet door and the right cabinet door are arranged, and handles are arranged on the three storage drawers and the five cabinet doors.
4. The heavy water reactor nuclear power plant auxiliary facility sleeve dismounting device according to claim 1 is characterized in that universal wheels are arranged at four corners of the bottom of a main frame, each universal wheel is provided with a brake, two movable handles are arranged on the right side face of the main frame, and two equal-length forward baffle rings are arranged on the left side face of the main frame.
5. The device for disassembling and assembling the auxiliary facility sleeve of the heavy water reactor nuclear power plant according to claim 1, wherein four guide posts are arranged at four corners of the lifting bottom plate, the guide posts are designed in a step mode, the lower cylinder is large, and the upper cylinder is small.
6. The device for disassembling and assembling the sleeve of the auxiliary facility of the heavy water reactor nuclear power plant according to claim 1, wherein the pad backing plate is fixedly connected with the lower sleeve backing plate through two spring bolts, so that the gap elasticity between the lower sleeve backing plate and the pad backing plate is adjustable.
7. A method for dismounting the sleeve of auxiliary facilities of heavy water reactor nuclear power plant includes such steps as removing sleeve of auxiliary facilities, rotating the turnover cover by 270 deg, unscrewing butterfly bolt, removing upper backing block of sleeve, pushing the device to the position beside auxiliary facilities, aligning the empty position with the opening of auxiliary facilities, arranging the front baffle ring on left side of main frame, braking the brakes of universal wheels installed at four corners of bottom of main frame, rotating lifting hand wheel to lower the lower backing block of sleeve to a height lower than the opening of auxiliary facilities, lifting sleeve to half the length, rotating lifting hand wheel and transverse hand wheel, lifting sleeve lower backing block to be same as sleeve, regulating lifting hand wheel and transverse hand wheel to make sleeve be same as the opening of auxiliary facilities, fully pulling sleeve out from auxiliary facilities, installing sleeve upper backing block, locking sleeve, turning over turnover cover, protecting sleeve, releasing the brakes of universal wheels, braking universal wheels, and removing sleeve.
8. A method for dismounting the sleeve of auxiliary facilities in heavy water reactor nuclear power plant includes such steps as installing sleeve of auxiliary facilities, 270 deg. rotating turnover cover to make it vertically perpendicular, moving the device to the auxiliary channel, installing sleeve, locking sleeve, turning over and protecting sleeve, releasing the brake of universal wheel, braking the brake of universal wheel, rotating lifting hand wheel and transverse hand wheel, aligning sleeve to auxiliary channel, regulating the gap between sleeve and auxiliary channel, pushing sleeve into auxiliary channel, unscrewing butterfly bolt, removing upper pad of sleeve, rotating lifting hand wheel, lowering lower pad of sleeve to a height not affecting sleeve, fully pushing sleeve into auxiliary channel, installing sleeve, locking sleeve, turning over and protecting sleeve, releasing the brake of universal wheel, braking universal wheel, and installing sleeve.

Description

Heavy water reactor nuclear power plant auxiliary facilities sleeve pipe dismouting device Technical Field The invention belongs to the technical field of auxiliary facilities of heavy water reactor nuclear power plants, and particularly relates to a sleeve dismounting device for the auxiliary facilities of a heavy water reactor nuclear power plant. Background The auxiliary facilities of the heavy water reactor nuclear power plant provide services for the inspection of the pusher head of the loading and unloading machine, the replacement of a fault sealing plug, the replacement of a fault shielding plug, the manual loading of new fuel and the like. In the normal operation mode, the auxiliary facilities are provided with large sleeves, and when the fault shielding plug is required to be replaced, the push rod head is required to be inspected, new fuel is required to be manually loaded, and the like, the fault shielding plug is required to be replaced by small sleeves. The small sleeves are placed on fixed shelves in the auxiliary facility room, weighing about 60 kg. When the auxiliary facility is replaced, two operators are required to wear the air clothes to lift the auxiliary facility aside, aim at the auxiliary facility port and push the auxiliary facility into the auxiliary facility. The personnel wear the gas clothes and carry the heavy object and walk very inconvenient, have the tripping risk. Secondly, personnel support by the waist force entirely when carrying out sleeve centering, and centering clearance is about 1mm, and personnel need correct repeatedly, and is great to personnel's bodily injury. In view of the above, an auxiliary facility sleeve dismounting device is designed, which can provide effective support and centering adjustment functions, lighten personnel working risks, improve sleeve dismounting efficiency and ensure personnel and equipment safety. Disclosure of Invention The invention aims to provide a sleeve dismounting device for auxiliary facilities of a heavy water reactor nuclear power plant, which is adapted to the operation requirement of a small space of the nuclear power plant, reduces the risk and physical burden of personnel dismounting work, improves the sleeve dismounting efficiency and ensures the safety of personnel and equipment in the dismounting process. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: The dismounting device for the auxiliary facility sleeve of the heavy water reactor nuclear power plant comprises a main frame, a cover-turning lug seat and a cover-turning lug seat, wherein one side of the upper part of the main frame is provided with two cover-turning lug seats; the linear sliding tables are arranged on short square steel which is transversely arranged in the middle of the main frame in parallel, two sliding table sliding blocks are arranged on each linear sliding table, the sliding table sliding blocks are connected with the bottom of the lifting base plate, the lifting base plate slides on the linear sliding tables, a transverse moving bearing seat cushion block is welded on the long square steel in the middle of the main frame, a transverse moving bearing seat is fixed on the transverse moving bearing seat cushion block, a transverse moving scale is welded on the upper surface of the transverse moving bearing seat, one end of the transverse moving lead screw passes through a bearing in the transverse moving bearing seat and is connected with a transverse moving hand wheel, the other end of the transverse moving lead screw passes through a transverse moving mounting hole of the lifting base plate and is matched and connected with a transverse moving nut, the transverse moving nut is fixedly arranged on the lifting base plate, when the transverse moving hand wheel is rotated, the transverse moving hand wheel moves forwards and backwards along with the lifting base plate, the two worm mechanisms are respectively arranged at two ends of the middle of the lifting base plate, the two worm mechanisms are connected through shaft couplings, the lifting hand wheel is arranged near the input end of the worm mechanism on the right side of the lifting base plate, the lifting base plate near the lifting base plate is welded with the lifting hand wheel, the lifting hand wheel is matched and is fixedly connected with the lifting nut through the mounting hole of the upper and the lower guide rail of the lower guide rail, when the lifting base plate is rotated, and each linear sliding plate is matched with the four sliding guide rail is matched and provided with the four guide rails, the two adjacent side-by-side guide rail sliding blocks in one group are fixedly connected to the lining block base plate through bolts to enable the two guide rail sliding blocks to synchronously move, the lining block base plate is fixedly connected with the sleeve lower lining block, two pressing overturning buckle plates are respec